1.

A chemical A is used for the preparation of washing soda to recover ammonia . When CO_(2) is bubbled through an aqueous solution of A , the solution turns milky . It is used in white washing due to its disinfectant nature . What is the chemical formula of A ?

Answer»

`Ca(HCO_(3))_(2)`
`CAO`
`Ca(OH)_(2)`
`CaCO_(3)`

Answer :C


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